Question by Lê Quốc Trần Anh - Discuss with MathYouLike

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15/03/2018 at 09:00

Min Zhang wrote down all of the two-digit multiples of 5. What is the probability that one of these numbers, chosen at random, has exactly two distinct primes that are factors? Express your answer as a common fraction.

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Lê Anh Duy 17/03/2018 at 15:32

Of the 18 two-digit multiples of 5 from 10 to 95, only 13 have exactly distinct prime numbers.

=> The probability of choosing one of these 13 at random, is \(\dfrac{13}{18}\)
Lê Quốc Trần Anh selected this answer.

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